diff --git a/roles/ipsilon/templates/httpd.conf.staging.j2 b/roles/ipsilon/templates/httpd.conf.staging.j2
index 88d249613c..f2407f138a 100644
--- a/roles/ipsilon/templates/httpd.conf.staging.j2
+++ b/roles/ipsilon/templates/httpd.conf.staging.j2
@@ -10,11 +10,11 @@ Redirect /.well-known/webfinger /webfinger
 RewriteEngine on
 RewriteMap lowercase int:tolower
 {% if env == "staging" %}
-RewriteCond ${lowercase:%{SERVER_NAME}} ^[a-z0-9-]+\.id\.stg\.fedoraproject\.org$
+RewriteCond ${lowercase:%{SERVER_NAME}} ^[a-z0-9_-]+\.id\.stg\.fedoraproject\.org$
 RewriteRule ^(.+) ${lowercase:%{SERVER_NAME}}$1 [C]
 RewriteRule ^([a-z0-9-]+)\.id\.stg\.fedoraproject\.org/.* /openid/id/$1/ [PT]
 {% else %}
-RewriteCond ${lowercase:%{SERVER_NAME}} ^[a-z0-9-]+\.id\.fedoraproject\.org$
+RewriteCond ${lowercase:%{SERVER_NAME}} ^[a-z0-9_-]+\.id\.fedoraproject\.org$
 RewriteRule ^(.+) ${lowercase:%{SERVER_NAME}}$1 [C]
 RewriteRule ^([a-z0-9-]+)\.id\.fedoraproject\.org/.* /openid/id/$1/ [PT]
 {% endif %}